Results 21 to 30 of about 1,492 (187)

Silicon and Epichloë‐endophyte defences in a model temperate grass diminish feeding efficiency and immunity of an insect folivore

Functional Ecology, Volume 37, Issue 12, Page 3177-3192, December 2023., 2023
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plants deploy diverse anti‐herbivore defences which reduce feeding and performance of herbivores. Temperate grasses use silicon (Si) accumulation and Epichloë‐endophytes for physical and chemical (i.e. endophytic‐alkaloids) defence against insect herbivores.
X. Cibils‐Stewart, R. Putra, T. Islam, D. J. Fanna, R. Wuhrer, W. J. Mace, S. E. Hartley, A. J. Popay, S. N. Johnson   +8 more
wiley   +1 more source

Pastoral agriculture, a significant driver of New Zealand's economy, based on an introduced grassland ecology and technological advances

Journal of the Royal Society of New Zealand, Volume 53, Issue 3, Page 259-303, June 2023., 2023
ABSTRACT The New Zealand economy is export‐driven and heavily reliant on the productivity of the pastoral sector. The transformation of native forest and tussock grassland ecologies to temperate grasslands occurred rapidly with the arrival of Europeans.
John R. Caradus, Stephen L. Goldson, Derrick J. Moot, Jacqueline S. Rowarth, Alan V. Stewart   +4 more
wiley   +1 more source

Elevated atmospheric CO2 suppresses silicon accumulation and exacerbates endophyte reductions in plant phosphorus

Functional Ecology, Volume 37, Issue 6, Page 1567-1579, June 2023., 2023
Read the free Plain Language Summary for this article on the Journal blog. Abstract Many temperate grasses are both hyper‐accumulators of silicon (Si) and hosts of Epichloë fungal endophytes, functional traits which may alleviate environmental stresses such as herbivore attack.
Scott N. Johnson, Craig V. M. Barton, Fikadu N. Biru, Tarikul Islam, Wade J. Mace, Rhiannon C. Rowe, Ximena Cibils–Stewart   +6 more
wiley   +1 more source

Biological control of plant diseases – What has been achieved and what is the direction?

Plant Pathology, Volume 71, Issue 5, Page 1024-1047, June 2022., 2022
Biological control is coming of age and many products are commercially available. This review emphasizes the biology of the three‐way interactions involved and the long route to commercialization. Abstract The global sustainability agenda is increasing the demand for reduction in inputs into agricultural production while maintaining profitable yield of
David B. Collinge, Dan Funck Jensen, Mojgan Rabiey, Sabrina Sarrocco, Michael W. Shaw, Richard H. Shaw   +5 more
wiley   +1 more source

Ergot alkaloids in New Zealand pastures and their impact

New Zealand Journal of Agricultural Research, Volume 65, Issue 1, Page 1-41, February 2022., 2022
ABSTRACT In identifying endophytes for use in pastures in New Zealand there have been two strategies used, either exclusion of ergopeptine and lolitrem alkaloids or, retaining some ergopeptine expression to enhance the stability of natural defences against invertebrate pests. Both have their strengths and weaknesses.
John R. Caradus, Stuart D. Card, Sarah C. Finch, David E. Hume, Linda J. Johnson, Wade J. Mace, Alison J. Popay   +6 more
wiley   +1 more source

Acute exposure to ergot alkaloids from endophyte-infected tall fescue does not alter absorptive or barrier function of the isolated bovine ruminal epithelium*

Animal, 2014
Ergot alkaloids in endophyte-infected (Neotyphodium coenophialum) tall fescue (Lolium arundinaceum) have been shown to cause a reduction in blood flow to the rumen epithelium as well as a decrease in volatile fatty acids (VFA) absorption from the washed ...
A.P. Foote, G.B. Penner, M.E. Walpole, J.L. Klotz, K.R. Brown, L.P. Bush, D.L. Harmon   +6 more
doaj   +1 more source

Expression and purification of an adenylation domain from a eukaryotic nonribosomal peptide synthetase: Using structural genomics tools for a challenging target [PDF]

, 2010
Nonribosomal peptide synthetases (NRPSs) are large multimodular and multidomain enzymes that are involved in synthesising an array of molecules that are important in human and animal health.
Arcus, Vickery L., Johnson, Richard D., Lee, T. Verne, Lott, J. Shaun   +3 more
core   +2 more sources

Isoflavone Containing Legumes Mitigate Ergot Alkaloid-Induced Vasoconstriction in Goats (Capra hircus)

Animals, 2022
Ergot alkaloids produced by a fungal endophyte that infects tall fescue (Lolium arundinaceum; (E+ TF) can induce constriction of the vasculature in ruminants, resulting in “fescue toxicosis”.
Brittany E. Harlow, Michael D. Flythe, Jack P. Goodman, Huihua Ji, Glen E. Aiken   +4 more
doaj   +1 more source

BMC Microbiology / Rhodococcus erythropolis MTHt3 biotransforms ergopeptines to lysergic acid [PDF]

, 2015
Background: Ergopeptines are a predominant class of ergot alkaloids produced by tall fescue grass endophyte Neotyphodium coenophialum or cereal pathogen Claviceps purpurea.
Apfelthaler, Elisabeth, Kneifel, Wolfgang, Krska, Rudolf, Kunz-Vekiru, Elisavet, Moll, Wulf-Dieter, Schatzmayr, Gerd, Schwartz-Zimmermann, Heidi Elisabeth, Thamhesl, Michaela   +7 more
core   +1 more source

Occurrence of Alkaloids in Grass Seeds Symbiotic With Vertically-Transmitted Epichloë Fungal Endophytes and Its Relationship With Antioxidants

Frontiers in Ecology and Evolution, 2018
Host organisms can acquire new functional traits through symbiosis. Seed-transmitted Epichloë fungal endophytes are known to protect host plants against herbivores and increase tolerance to abiotic stresses by alkaloids and antioxidants, respectively ...
Pedro E. Gundel, Charlotte E. Seal, Fernando Biganzoli, Marco A. Molina-Montenegro, Marco A. Molina-Montenegro, Beatriz R. Vázquez-de-Aldana, Iñigo Zabalgogeazcoa, Lowell P. Bush, María A. Martínez-Ghersa, Claudio M. Ghersa   +9 more
doaj   +1 more source